Stock Profit Calculator

This works out what a share trade actually made, from the number of shares, the price you paid, the price you sold at and the commission charged on each side. Enter both prices with any dividends received and the days you held the position, and it returns the net profit, the cost basis, the total and annualized return, and the break-even price the shares had to reach before the round trip was worth anything. A second tab runs it backwards and gives the sell price needed for a return you name. All figures are before tax, since the rate on a gain depends on your holding period and your income rather than on anything entered here.

Calculator Type

Enter both sides of the trade with the commissions you actually paid. The break-even price is the one worth writing down: it is what the shares have to reach before the round trip has made you anything.

Number of Shares *

Fractional shares are fine.

Buy Price per Share ($) *

Sell Price per Share ($) *

Or the current price, to see where the position stands today.

Commission or Fees on the Buy ($)

Zero at a commission-free broker. Include any transaction levy you were charged.

Commission or Fees on the Sell ($)

Dividends Received in Total ($)

All the cash dividends paid on this holding while you owned it. Leave at zero if there were none.

Days Held (optional)

Fill this in to turn the profit into a yearly rate. Zero leaves it out.

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